Tab A - Page 53 
procedures. Use of an antibiotic resistance marker will permit prompt arid 
accurate Identification of the two INA" strains. 
Eliminating the field testing of Erwlnla herblcola for at least the first 
year of the field test will simplify monitoring efforts because It will reduce 
the number and type of bacteria involved. 
5.4.4 Withhold Approval 
Under this alternative, only classical methods of frost control would be 
available. Since these methods are only partially effective and many use large 
amounts of energy, economic losses resulting from frost damage would continue 
and energy resources (water, fossil fuels) would continue to be expended. In 
addition, many of these classical methods, such as burning to heat air near the 
crop, can directly harm the environment. 
Another effect of this alternative would be to retard scientific progress. 
5 . 5 Summary and Conclusions 
The INA" bacteria proposed to be used in the field test would be derived 
by the removal of the genetic material encoding the property (INA + ). No 
functional foreign genes would be added. Thus, no new phenotype would be 
Introduced Into the mutants used In the field test. 
Large INA" populations of both P. s. syrlnqae and £. herblcola already 
occur naturally. Depending on the host plant from which the bacteria are 
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